org.apache.hadoop.mapred

类 CleanupQueue

java.lang.Object

org.apache.hadoop.mapred.CleanupQueue

public class CleanupQueue
extends Object

字段概要

字段

限定符和类型	字段和说明
static org.apache.commons.logging.Log	LOG

构造器概要

构造器

限定符	构造器和说明
protected	CleanupQueue() Create a singleton path-clean-up queue.

方法概要

方法

限定符和类型	方法和说明
void	addToQueue(org.apache.hadoop.mapred.CleanupQueue.PathDeletionContext... contexts) Adds the paths to the queue of paths to be deleted by cleanupThread.
static CleanupQueue	getInstance()
protected boolean	isQueueEmpty()

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

LOG

public static final org.apache.commons.logging.Log LOG

构造器详细资料

CleanupQueue

protected CleanupQueue()

Create a singleton path-clean-up queue. It can be used to delete paths(directories/files) in a separate thread. This constructor creates a clean-up thread and also starts it as a daemon. Callers can instantiate one CleanupQueue per JVM and can use it for deleting paths. Use addToQueue(PathDeletionContext...) to add paths for deletion.

方法详细资料

getInstance

public static CleanupQueue getInstance()

addToQueue

public void addToQueue(org.apache.hadoop.mapred.CleanupQueue.PathDeletionContext... contexts)

Adds the paths to the queue of paths to be deleted by cleanupThread.

isQueueEmpty

protected boolean isQueueEmpty()